Alfa Romeo and Honda have both made some potent V6s over the years, so it's only natural that maniacal engine swappers would do some shoehorning to fit V6s in cars that never had them from the factory. Rather than make you start out with a car on one side of the garage and an engine on the other -- we'll do that later, don't worry -- we've found a couple of projects that are nowhere near done mostly finished, needing only a series of miracles a few final details to be transformed into uncontrollable beasts high-performance thoroughbreds. Smell that brimstone!

You could get a GTV6 with this engine, but the Alfetta sedan is much cooler.

Alfa Romeo put V6 engines in the sporty GTV6, but the company never saw fit to drop its sweet-sounding V6 in the Alfetta sedan. Clearly, the only remedy to this oversight is to grab the entire drivetrain out of a Milano and stuff the whole works into a gutted Alfetta Sport Sedan… and that's exactly what happened with this Alfetta in Washington (go here if the listing disappears).

Priced at just $1,500 -- hey, we had trouble believing it ourselves -- and sitting for a mere 20 years, this car was allegedly "used as a very fast V-6 daily driver in the bay area" before its Pacific Northwest migration and subsequent long pause. There's no interior whatsoever and the glass is missing, but the seller says a "complete stock sport sedan is available for all interior parts, glass (bronze) misc detail hardware, etc. if desired," so you'll be able to get everything you need in a convenient one-stop shop! Instead of the miserable 111 hp available from the Sport Sedan's original late-'70s-smoggo Alfa Twin Cam engine, you'll get the Milano's 154 spirited Italian horses.

Because doubling the horsepower always makes a Civic better.

Those tradition-bound engineers at Honda just didn't have the imagination needed to squeeze a rampaging V6 engine into the sixth-generation Civic, no doubt due to corporate pressure to avoid outshining Acura products (and certainly not because a big, heavy V6 in the little Civic would lead to ghastly torque-steer and weight-balance problems). Fortunately, junkyard engines are cheap and Honda freaks never see an engine swap they don't like, so V6 Civic projects are available at reasonable prices all over the country.

The most powerful new Civic you could buy in America in 1999 came with a pallid 160 horsepower out of a tiny 1.6 liters of displacement, and we all know that's just Not Enough. We've got good news, though: this 1999 Civic Si coupe with J32A2 V6 swap in Georgia (go here if the listing disappears) solves the power shortage via 260 Acura TL horses, and the swap is not even close to done just about finished. Yes, the SOHC VTEC J32A2 V6 should be suicidal optimal for this car, and the seller has the engine firmly bolted into place already. You get all sorts of new parts, and the seller says "This car is about 75 percent finished I have every thing to make it run and drive, and will do so for the right deal, other than that it's missing an exhaust, hood, bumper and have the front clip painted."